# 可拖动区域
原理：区域绝对定位，拖动过程中修改区域定位样式
<template>
<div class="box">
<div
class="drag-div"
:style="{top,left}"
@mousedown="mousedown"
@mouseup="mouseup"
@mouseleave="mouseleave"
@mousemove="mousemove"
></div>
</div>
</template>
<script>
export default {
data() {
return {
top: "0",
left: "0",
moving: false,
};
},
methods: {
mousedown() {
this.moving = true;
},
mouseup() {
this.moving = false;
},
mouseleave() {
this.moving = false;
},
mousemove(e) {
if (this.moving) {
this.top = Number(this.top.replace("px", "")) + e.movementY + "px";
this.left = Number(this.left.replace("px", "")) + e.movementX + "px";
}
},
},
};
</script>
<style>
.box {
width: 200px;
height: 200px;
background: lightgreen;
position: relative;
}
.drag-div {
width: 50px;
height: 50px;
background: red;
position: absolute;
}
</style>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Expand Copy Copy